PSI - Issue 13
Zarko Miskovic et al. / Procedia Structural Integrity 13 (2018) 2143–2151 2147 Z. Miskovic, R. Mitrovic, Z. Stamenic, G.M. Bakic, M.B. Djukic, B.Rajicic / Structural Integrity Procedia 00 (2018) 000 – 000 5
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Fig. 5. The algorithm for the surface roughness (prominence height) determination on a 50 mm shaft sleeve surface, tolerance class h7 3.2. Analytical determination of the disassembling force boundary values for the conveyor idlers rolling bearings separation from its shell – Fi 2stmin and Fi 2st max The disassembling force needed to separate the conveyor idlers rolling bearings from its shell Fi 2 [kN] is an axial force acting on the conveyor idlers rolling bearing during the disassembling, Fig. 4, phase C. This pressure joint was previously formed by longitudinal (axial) pressing. For the analytical determination of the disassembling forces boundary values during the separation of the conveyor idlers rolling bearings from its shell, the corresponding equations for the pressurized thick wall vessels were used, i.e. the bedding was considered as an internally pressurized thick wall vessel, and outer bearing rings were considered as externally pressurized thick wall vessels. Therefore, the allowed minimal ( Fi 2stmin [kN] ) and maximal ( Fi 2stmax [kN] ) values of disassembling forces can be calculated as:
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